Okay so I just ended my period 3 days ago and when I did me and my bf had sex. I was fine until a couple hours later I was spotting which I thought was usual. But then the next day I felt a gush of blood just flow through. Which so then I thought I started it again. So I put a light tampon but was too light it was going right through. Then when I put a bigger one I went too change it out and there's no blood but a greenish color. Which I don't understand why. There's no itching or burning or anything like that. I do now have cramps and I also have been have high stomach pains not sharp but different. They randomly come and when they do I have to stop what I'm doing because it hurt too much then will fade but still hurt. Now idk what too do...